1. The sum of the physical, functional, and psychological attributes of a gender’s biologically correct, natural, normal or typical sexual behavior, conduct or expression.

2. (Biology) Sexual activity, behavior, conduct or expression that is biologically correct, natural, normal, or typical of the male or of the female; the sexual attraction to members of the opposite sex.

4. (Psychology) The psycho erotic attraction to members of the opposite sex; the disposition to sexually behave in a mentally sane and biologically correct, natural, normal or typical manner. The quality of being free of psycho sexual (i.e., aberrosexual) disorders such as bisexualism, fetishism, homosexualism, lesbianism, necrophilism, sadomasochism, voyeurism, zoophilism, etc.